For more difficult relaying applications, such as EHV lines using series capacitors in the line, some companies always use two sets of solid-state relays to provide the protection systems. Transmission-line relay terminals are located at the substation and employ many different types of relaying sch...
The power system which deals up to 36 kV is called MV (medium voltage switchgear). These are available in different types like without metal enclosure outdoor type, metal-enclosed indoor & outdoor type, etc. This kind of equipment includes substation devices like minimum oil CBs, bulk oil CB...